Plot view of rapidminer

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I have done a clustering of web server log data(k-means). My data format is as following.

Page  | page1 | page2 | page3
user1 |    0 |    1 |    1
user2 |    1 |    0 |    0
user3 |    0 |    1 |    1

In the plot view of example set I get page list and cluster in the drop down list. What should I select as X-axis and Y-axis.